Coalescence probability of liquid-drops in stirred liquid-liquid dispersions

The coalescence of two drops in a turbulent flow field requires the drainage of an intervening viscous film of continuous-phase fluid under the action of a turbulent force which is a random function of time. Because the hydrodynamic problem is complicated, a detailed time-scale analysis is employed to identify simple models corresponding to limiting physical situations. Analysis of these models reveals that the dependence of the coalescence efficiencies on physical parameters may reverse as one goes from one limiting physical situation to the other